Lawn striping assembly

ABSTRACT

The lawn striping assembly ( 10, 110 ) utilizes a C-shaped channel member having a plurality of attachment positions ( 22, 122 ). A pair of brackets ( 46 ) attach a roller apparatus ( 16 ) to the frame ( 302 ) of a lawn mower. ( 114 ). The C-shaped channel member includes a top portion ( 20, 120 ) presenting a plurality of attachment positions ( 22, 122 ) for retaining a fastener ( 42, 142, 242 ) therein. In a more specific sense, the invention utilizes a pair of said C-shaped channel members disposed in back to back relationship with one another.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a divisional of copending application Ser. No.10/818,573, filed Apr. 6, 2004 which is a continuation-in-part ofapplication Ser. No. 10/385,093 filed Mar. 10, 2003, now abandoned butwhich, in turn, claims the benefit of U.S. Provisional PatentApplication Ser. No. 60/363,120, filed Mar. 11, 2002.

FIELD OF THE INVENTION

The subject invention generally relates to lawn care equipment and, moreparticularly, to lawn care equipment for bending grass.

BACKGROUND OF THE INVENTION

In the area of lawn and playing field maintenance, grass striping is acommon practice, generally used in combination with cutting grass,whereby the grass on a lawn or field is bent in a particular directioncausing light to be reflected therefrom in order to achieve anaesthetically pleasing appearance.

Typically, grass striping is accomplished through the use of rollers.Such rollers are fixedly attached on a commercial lawn mower havingfront and rear tires and a mower deck having a mower blade rotatablydisposed therein. Conventionally, the rollers are disposed rearward ofthe mower deck and forward of the rear tires such that, after the grassis cut by the blade, the remaining grass is immediately bent in aparticular direction. After the blade cuts the grass, the roller bendsthe grass in the same direction that the roller is moving. With eachpass along the lawn or field, the roller stripes the grass in a bandhaving a width equal to that of the roller. Generally, both commercialand residential mowers lack the space required to include a rollerbetween the mower deck and the rear tires.

Various commercial and residential mowers incorporate a turning featureor a zero-turning radius, whereby, upon turning, the inner tire on theinside of the turn radius rotates backward while the outer tire on theoutside of the turning radius rotates forward. Upon turning, the rollerfixedly disposed between the mower deck and the rear tires is forced totravel in a direction perpendicular to its axis of rotation. As aresult, the roller becomes wedged in the grass, thereby inhibiting themower from preventing the turn.

In addition, such rollers are typically mounted to the mower in a staticposition above the ground in order to provide ground clearance andaccommodate the contours of the lawn or field being mowed. Consequently,the rollers do not sit directly on the grass and the resultant bendimparted thereto is minimized.

Moreover, conventional rollers are made from one-piece steel rollerswhich are specially manufactured to the size requirements of theparticular mower, thereby increasing the time and cost for manufacturingand repair which is passed on to consumers.

SUMMARY OF THE INVENTION AND ADVANTAGES

The subject invention is a lawn striping assembly for bending grass. Theassembly includes a roller apparatus having a roller axis and a channelmechanism extending along a channel axis and including a top portionpresenting a plurality of attachment positions. At least one support isincluded for supporting the roller apparatus on the channel mechanismwith the roller axis being parallel to the channel axis.

In a more specific sense, the channel mechanism includes a channelmember having a C-shaped cross section for retaining a fastener therein.

The assembly of the subject invention allows the roller assembly to bemounted at a wide variety of attachment positions on the lawn caredevice. Each part required to fabricate the assembly of the subjectinvention may be purchased off the shelf and in bulk, thereby reducingthe time and costs for manufacture and repair, i.e., the inventionrelates to a new combination.

On a zero-turn radius lawn care device, the subject assembly may bedisposed rearward of device or between the rear drive tires parallelwith the wheel axis. Thus, the pivot point of the assembly mirrors thepivot point of the device. The assembly pivots with the drive tireswhich prevents the assembly from swinging perpendicular to the directionof the drive tires and scalping the grass. Further, the assembly ispivotally mounted to either the frame of the device or the mower deck.When pivotally mounted to the mower deck, a free-floating mower deckcontinues to float which also prevents scalping of the grass.

The assembly is pivotally mounted to the frame or the mower deck and,thus, rides on the ground at all times independently of the height ofthe mower deck or frame. As a result, a maximum bend is imparted to thegrass to enhance the colors of the patterns created. Moreover, the mowerdeck may be adjusted without adjusting the height of the assemblytherewith.

BRIEF DESCRIPTION OF THE DRAWINGS

Other advantages of the present invention will be readily appreciated asthe same becomes better understood by reference to the followingdetailed description when considered in connection with the accompanyingdrawings wherein:

FIG. 1 is a perspective view of the lawn striping assembly of thepresent invention disposed on a lawn care device;

FIG. 2 is a perspective view of the lawn striping assembly of thepresent invention;

FIG. 3 is an exploded perspective view of the lawn striping assembly ofthe present invention;

FIG. 4 is a bottom view of the lawn striping assembly of the presentinvention disposed on a zero turn-radius riding mower;

FIG. 5 is a bottom view of the lawn striping assembly of the presentinvention disposed on a zero turn-radius walk-behind mower; and

FIG. 6 is an exploded perspective view of the lawn striping assembly ofthe present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

Referring to the Figures, wherein like numerals differing by one hundredindicate like or corresponding parts throughout the several views, alawn striping assembly for bending grass is generally shown at 10 inFIGS. 1–5 and at 110 in FIG. 6. The lawn striping assembly is disposedon a lawn care device, e.g., lawn mower, generally indicated at 12.

The lawn striping assembly 10, 110 includes a channel mechanism,generally shown at 14, 114 and a roller apparatus, generally shown at16. The channel mechanism 14, 114 extends along a first or channel axis18, 118 and includes a top portion 20, 120 having or presenting aplurality of attachment points or positions, defined by holes 22 inFIGS. 1–5 and by an upper channel member, as described hereinafter. Thechannel mechanism 14, 114 has opposing ends, generally indicated at 24,defined by at least one C-shaped channel member with an end cap 26, 126disposed on each of the opposing ends 24.

A first side wall 28, 128 extends from the top portion 20, 120 anddefines a first shoulder 30, 130 having a first lip 32, 132. A secondside wall 34, 134 extends from the top portion 20, 120 and defines asecond shoulder 36, 136 having a second lip 38, 138. The top portion 20,120 and first and second side walls 28, 128 and 34, 134 define a channelpassageway, generally indicated at 40, 140. In other words, the sidewalls 28, 128, 34, 134 are generally parallel to one another and arecoextensive with the shoulders 30, 130, 36, 136 extending toward oneanother to define a slot therebetween that opens into the channelpassageway 40, 140. A pair of fasteners 42, 142 are slideably disposedon the channel mechanism 14 in the channel passageway 40, 140. Eachfastener 42 can include a pair of grooves 44 corresponding to each ofthe first 32, 132 and second lips 38, 138.

The assembly 10, 110 of the present invention further includes a pair ofbrackets 46 for attaching the channel members to a lawn care device 12,e.g., to a first pair of attachment positions defined by the holes 48 inFIGS. 1–5 and to an upper channel member in FIG. 6. Each bracket 46includes a first end 50 and a second end 52 wherein the first end 50 isfixedly attached to the first pair of attachment positions on thechannel mechanism 14 via a first connector, generally shown at 54 inFIGS. 3 and 6. In the first embodiment shown in FIG. 3, the firstconnector 54 includes a bolt 56, a washer 58, such as a split lockwasher or any other suitable washer, and an oversized nut 59. Theoversized nut 59 is a nut that, when tightened to the bolt, is disposedbetween the side walls 28, 34 which prevent the nut 59 from turning andbacking off of the bolt 56. However, any suitable connector may be usedto fixedly attach each of the brackets 46 to the channel mechanism 14,such as a square fastener 42.

The second end 52 of each bracket 46 is pivotally mounted on the lawncare device 12 via a rotatable fastener, generally shown at 62. In onearrangement, the rotatable fastener 62 includes the bolt 56, a splitlock washer 64, a nut 60, a jam nut 69, and a plurality of flat washers66. Although any suitable rotatable fastener may be used to pivotallymount the second end 52 of each bracket 46 to the lawn care device 12.In one arrangement, the pair of brackets 46 are pivotally mounted on apair of side edges 68 of the lawn care device 12. In yet anotherarrangement shown at the right in FIG. 6, the bracket 46 is notrotatable and is connected by two bolts 56 the lawn care device 12. Inaddition, an adapter 70, such as an L-shaped bracket, may be pivotallyattached to the second end 52 of each bracket 46 via the rotatablefastener 62. The adapter 70 is also fixedly attached to a front edge 72of the lawn care device 12.

The roller apparatus 16 includes a plurality of rollers, each generallyindicated at 74, that are identical, an axle 76, and a pair of axlesupports 78 disposed on and support the axle 76. The axle 76 extendsalong a second or roller axis 80 that is parallel to the first axis 18of the channel mechanism 14. The plurality of rollers 74 are disposed onthe axle 76 in axial alignment.

The axle supports 78 are disposed on and support the axle 76 and arejuxtaposed between two of the rollers 74, generally indicated at 82. Theroller apparatus 16 is attached to the channel mechanism 14 via at leastone pair of axle supports 78. In one arrangement, the pair of axlesupports 78 are each attached via a second connector 77 to the pair offasteners or square nuts 42, 142 slidably disposed in the channelpassageway 40, 140 of the channel mechanism 14, 114. The secondconnector 77 includes the bolt 56, the lock washer 64, and the flatwasher 66. In this arrangement, the axle supports 78 are adjustablealong the axle 76 by merely sliding the fasteners 42, 142 through thechannel passageway 40, 140, and, thus, may be easily moved to anydesired location along the channel mechanism 14, 114 by changing thenumber of rollers 74 disposed on the axle 76 as required by a particularapplication.

In an alternate arrangement, the pair of axle supports 78 disposed onthe axle 76 are each fixedly attached via a support connector 79 to asecond pair of attachment holes 84 disposed on the channel mechanism 14.The support connector 79 includes a bolt 56, the lock washer 64, theflat washer 66 and the nut 60. In this arrangement, any adjustment ofthe axle supports 78 requires the connectors 54 to be loosened, the axlesupport 78 relocated along the axle 76, and the connector 54 tightenedonce again.

In applications where increased support is necessary, additional axlesupports 78 may be disposed on the axle 76 and attached to acorresponding additional fastener 42, 142 slidably disposed in thechannel mechanism 14, 114. Alternatively, the additional axle support 78may be attached directly to an additional one of the attachment holes22.

The width of the roller assembly 16 varies according to the lawn caredevice 12 for which it is designed. As shown in the Figures, one or moreinner rollers 86 are axially aligned side-by-side on the axle 76 betweenthe axle supports 78. A separator 88 is located between each innerroller 86 to reduce friction and lessen the wear and tear on the innerrollers 86.

The pair of axle supports 78 are located on the axle 76 outwardly of theoutermost pair 90 of inner rollers 86. One or more outer rollers 92 arelocated outwardly from the axle supports 78. A first spacer 94 isdisposed between each axle support 78 and the corresponding outermostinner roller 90. The first spacer 94 may include a plurality of washersor any other suitable spacer. A second spacer 96 is disposed betweeneach of the axle supports 78 and the innermost outer roller 98. Thesecond spacer 96 may include a plurality of washers or any othersuitable spacer. The first and second spacers 94, 96 reduce friction andlessen wear and tear on the axle supports 78 and rollers 90, 98. A pairof axle caps 100 are mounted on opposing ends of the axle 76 to retainthe rollers 74, axle supports 78, washers 94, 96, and separators 88 onthe axle 76.

The embodiment of FIG. 6 includes a roller apparatus 16 having a rolleraxis 80 and a channel mechanism 114 extending along a channel axis 118including a top portion 120 presenting a plurality of attachmentpositions, generally indicated at 122. More specifically, the embodimentof FIG. 6 presents an infinite number of attachment positions 122. Likethe aforesaid embodiment, a plurality of supports 78 supporting theroller apparatus 16 on the channel mechanism 114 with the roller axis 80being parallel to the channel axis 118.

Also like the first embodiment, the channel mechanism 114 includes achannel member having a first side wall 128 extending from the topportion 120 to a first shoulder 130 and a second side wall 134 extendingfrom the top portion 120 to a second shoulder 136. The side walls 128,134 are generally parallel and coextensive and the shoulders 130, 136extend toward and are spaced from one another to define a slottherebetween that opens into a channel passageway 140. A square fastener142 is disposed in the channel passageway 140 for attaching the support78 to the channel member. Although not necessary, a first lip 132extends from the first shoulder 130 toward the top portion 120 and asecond lip 138 extends from the second shoulder 136 toward the topportion 120. The fastener 142 is disposed on and clamps the lips 132,138. Again not necessary but the fasteners 142 may include a pair ofgrooves 44 corresponding to the first 132 and second 138 lips toposition the square nuts 142 between the lips 132 and 138.

A plurality of the supports 78 support the axle 76 and are attached to apair of the fasteners 142. In a similar fashion, a plurality of brackets46 are attached to respective ones of said attachment positions axiallyalong said top portion 120 for attaching the assembly to any one ofvarious different lawn care devices. Unlike the embodiment of FIGS. 1–5,wherein the attachment positions 22 are defined by a plurality of holesdisposed axially along said top portion 20 of said channel member, theembodiment of FIG. 6 the attachment positions 122 are defined by asecond or top channel member defining an upper channel passageway 140and a square nut fastener 242 disposed therein for attachment to thebrackets 46. The upper and lower channel members are mirror images ofone another. Although the upper and lower channel members may beidentical and separate in back to back relationship, they are shown asintegral with one another along the top portions 120 thereof.

The invention provides a lawn striping assembly for bending grass thatutilizes a channel member having a C-shaped cross section for retaininga fastener therein. In a more specific sense, the invention utilizes apair of said C-shaped channel members disposed in back to backrelationship with one another, as shown in FIG. 6. A first fastener 142is retained in one of the channel members (the lower one) for supportingthe support 78 and a second fastener 242 is disposed in the otherchannel member (the upper one) for connecting the bracket 46 to theother channel member.

The lawn striping assembly 10, 110 of the subject invention is mountedto the lawn care device 12. More particularly, the lawn care device 12includes a frame 302 and a mower deck 304 having a mower blade 306disposed therein, such as a walk-behind lawn care device, a riding lawncare device, a zero turn-radius lawn care device or any other suitablelawn care device.

Referring to FIGS. 4 and 5, a zero turn-radius (“ZTR”) lawn care device12 includes a pair of front drive tires 308 disposed on the frame 302, aplurality of mower deck wheels 310 attached to the mower deck 304, and apair of rear drive tires 312 interconnected via a wheel axle 314. TheZTR riding lawn care device 12 is capable of pivoting about a firstcentral turn axis 316.

Referring to FIG. 4, the first central turn axis 316 of a ZTR ridinglawn care device 12 is located at or near the center point between thepair of rear drive tires 312. The ZTR riding lawn care device 12 pivotsabout the first central turn axis 316 by turning one rear drive tire 312in the forward direction and turning the other rear drive tire 312 inthe reverse direction.

The lawn striping assembly 10 of the subject invention is disposedbetween the rear drive tires 312 and parallel with the wheel axle 314 ofthe ZTR riding lawn care device 12. In operation, as the rear drivetires 312 of ZTR riding lawn care device 12 roll about the first centralturn axis 316, the lawn striping assembly 10 pivots in conjunctiontherewith. More specifically, the outer 92 and inner rollers 86 closestto the forward moving rear drive tire 312 roll forward. The outer 92 andinner rollers 86 closest to the rearward moving rear drive tire 312 rollrearward. The center roller 318 at the center of the axle 76 and inalignment with the first central turn axis 316 does not roll or rollsonly slightly because it has the same central turn axis as the ZTRriding lawn care device 12 and serves as the pivot point for the lawnstriping assembly 10.

Referring to FIG. 5, a second central turn axis 320 of a ZTR walk-behindlawn care device 12 is located at or near a center point, generallyshown at 322, of one of the rear drive tires 312 and, more particularly,the rear drive tire 312 which is located on the inside of the turn. Morespecifically, the ZTR walk-behind lawn care device 12 pivots about thesecond central turn axis 320 when the brake is applied to one of therear drive tires 312. The rear drive tire 312 to which the brake isapplied locks in place and becomes the pivot point on the inside of theturn.

The lawn striping assembly 10 of the subject invention is disposedbehind the rear drive tires 312 and parallel with the wheel axle 314. Inoperation, as the outside rear drive tire 312 pivots around the secondcentral turn axis 320 of the static rear drive tire 312 and forms an arc324 thereabout, the lawn striping assembly 10 pivots accordingly. Morespecifically, the outer rollers 92 of the lawn striping assembly 10which are positioned behind the static rear drive tire 312 are alsostatic or roll only slightly and serve as the pivot point of theassembly 10. The outer rollers 92 positioned behind the outside reardrive tire 312 and the inner rollers 86 roll about the static rollers 92and follow the arc 324 about the lawn striping assembly 10 pivot point.

The invention has been described in an illustrative manner, and it is tobe understood that the terminology that has been used is intended to bein the nature of words of description rather than limitation. It isrecognized that those skilled in the art may make various modificationsor additions to the preferred embodiments chosen herein to illustratethe present invention, without departing from the spirit of the presentinvention. Accordingly, it is to be understood that the subject mattersought to be afforded protection should be deemed to extend to thesubject matter defined in the appended claims, including all equivalentsthereof.

1. A lawn striping assembly for bending grass, comprising: a rollerapparatus (16) having a roller axis (80); a channel mechanism (14, 114)extending along a channel axis (18, 118); at least one support (78) forsupporting said roller apparatus (16) on said channel mechanism (14,114) with said roller axis (80) being parallel to said channel axis (18,118); said channel mechanism (14, 114) including a channel member havinga C-shaped cross section for slidably retaining a fastener (42, 142)therein at any one of various positions along said channel member.
 2. Anassembly as set forth in claim 1 wherein said channel mechanism (114)includes a pair of said C-shaped channel members disposed in back toback relationship with one another.
 3. An assembly as set forth in claim1 including at least one bracket (46) for connecting said channel memberto a lawn care device.
 4. A lawn care device comprising: a frame (302);a roller apparatus (16) having a roller axis (80); a channel mechanism(14, 114) extending along a channel axis (18, 118); at least one support(78) supporting said roller apparatus (16) on said channel mechanism(14, 114) with said roller axis (80) being parallel to said channel axis(18, 118); at least one bracket (46) interconnecting said channelmechanism (14, 114) and said frame (302); said channel mechanism (14,114) including a channel member having a C-shaped cross section forslidably retaining a fastener therein for attaching said support (78) atany one of various positions along said channel member.
 5. An assemblyas set forth in claim 1 wherein said channel mechanism (114) includes apair of said C-shaped channel members disposed in back to backrelationship with one another, a first fastener (142) retained in one ofsaid channel members for supporting said support (78) and a secondfastener (242) disposed in the other channel member for connecting saidbracket (46) to said other channel member.
 6. A lawn striping assemblyfor bending grass, comprising: a roller apparatus (16) having a rolleraxis (80); a channel mechanism (14, 114) extending along a channel axis(18, 118) and including at least one channel member having a top portion(20, 120) and a first side wall (28, 128) extending from said topportion (20, 120) and defining a first shoulder (30, 130) and a secondwall (34, 134) extending from said top portion (20, 120) and defining asecond shoulder (36, 136) with said shoulders (30, 130), (36, 136)extending toward and are spaced from one another to define a slottherebetween that opens into a channel passageway (40, 140), a pluralityof fasteners (42, 56, 142) slidably disposed in said channel passageway(40, 140) and extending through said slot, a plurality of supports (78)slidably supported for attaching said support (78) at any one of variouspositions along said channel mechanism (14, 114) by said fasteners (42,56, 142) for supporting said roller apparatus (16) along said channelmechanism (14, 114) with said roller axis (80) being parallel to saidchannel axis (18, 118).
 7. An assembly as set forth in claim 6 includinga first lip (32, 132) extending from said first shoulder (30, 130)toward said top portion (20, 120) and a second lip (38, 138) extendingfrom said second shoulder (36, 136) toward said top portion (20, 120),said fastener (42, 142) being disposed on said lips (32, 132), (38,138).
 8. An assembly as set forth in claim 7 wherein said fastenerincludes a pair of grooves (44) corresponding to said first (32, 132)and second (38, 138) lips.
 9. An assembly as set forth in claim 6wherein said roller apparatus includes an axle (76) and a plurality ofrollers (74) rotatably supported on said axle (76), a pair of saidsupports (78) supporting said axle (76) and being attached to a pair ofsaid fasteners (42, 56, 142).
 10. An assembly as set forth in claim 6including a plurality of brackets (46) attached to said top portion (20,120) for attaching said assembly to any one of various different mowerstructures.
 11. An assembly as set forth in claim 10 wherein said topportion (20, 120) defines a plurality of holes disposed axially alongsaid top portion (20) of said channel member for attachment to saidbrackets (46).
 12. An assembly as set forth in claim 6 including aplurality of brackets (46) attached for attaching said assembly to anyone of various different mower structures and wherein said channelmechanism (14, 114) includes a second channel member defining a channelpassageway (140) and a fastener (242) disposed therein for attachment tosaid brackets (46).
 13. An assembly as set forth in claim 12 whereinsaid channel members are mirror images of one another.
 14. An assemblyas set forth in claim 13 wherein said channel members are integral withone another along the top portions (120) thereof.
 15. A lawn stripingassembly as set forth in claim 6 combined with a lawn care device (12).